1.anything you dont know the name for
2.anything disgusting
3.simile for shit, crap, turd, and other related words...
i use this word all the time so i would know - i have put alot of effort in this defintition

"whats this chat on the bottom of my shoe"
"ooooh, thats chat!"
"you know that chatness"
"this is the chattest thing i've ever seen mate"

The word orignated in Sydney years ago around the North Shore and seems to have spread Australia wide in a matter of years. There is a suburb named Chatswood in Sydney, the word was first used by a small group of individuals from the North Shore who had a disliking for a group of individuals from Chatswood. So if you were trying to offend your Shorey mate, you would call him Chat, or if you saw something shit, ugly etc, you would call it chat.

1, A phrase used in the UK to summarise someone's conversational ability. Usually used when speaking to a friend about someone you've just spoken to for the first time. This is the noun form of 'chat'.

2, When used as a verb to "chat" means to talk at ones leisure, usually to mates.

3, Chatting (same meaning as the above).

4, "Chatting up", distinctively different from the former. It means to speak flirtatiously with someone you usually intend to sleep with.

1, "Mate, that birds fit but her chat stinks!"

"I don't like your chat boy!"

2, "Just go chat to him and sort it out!"

"Alright mate, Haven't seen you in ages! Fancy going for a pint and a chat a bit later on?"

3, "What you chatting bout?"

"He was in there chatting away"

4, "Mate see that bird over there? I started chatting her up, but it turned out she has a fellah!"